TheCodeBreakers
Steganography (invisible inks, open Interception and Direction-Finding
codes, messages in hollow heels)
and Transmission Security (spurt
radio systems)
Traffic Security (call-sign changes, Traffic Analysis (direction-finding
dummy messages, radio silence) fixes, message-flow studies, radio-
fingerprinting)
Cryptography (codes and ciphers, Cryptanalysis
ciphony, cifax)
Electronic Security Electronic Intelligence
Emission Security (shifting of ra- Electronic Reconnaissance (eaves-
dar frequencies) dropping on radar emissions)
Counter-Countermeasures ("look- Countermeasures (jamming, false
ing-through" jammed radar) radar echoes)
This book employs certain typographic conventions for simplicity and economy. Plaintext is always set
annaabi.ee 
